Why does a 100 gram piece of wood float but a 100 gram piece of metal sink

State the law of conservation of mass? Describe landolt experiment

If a 100.0 g sample of water at 60.0 c is added to a 100.0 g sample of water at 10.0 c determine the final temperature of water. Assume no heat is lost to the surroundings

Which statement is true for the given reaction? Zn + PbSO4

Determine the empirical and molecular formula: Ibufuren, a headache remedy contains 75.6% C, 8.08% H, and 15.5% O by mass and has a molar mass about 206 g/mol.

Assume that a section of double stranded DNA contains 100 base pairs. if 40 of the pairs contain baseC how many of the pairs would contain base A?

Calculate the solubility of cux (ksp=[cu2+][x2-]=1.27*10-36) in a solution that is 0.190 m in nacn.

An atom has seven valance electrons which element could have this type of atom

How is the ocean important to human survival? restate the question

A sample of pure lithium contains 7.99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?

What ecosystem is being described in the passage?